Strip-casting machine



1. s. THOMPSON. STRIP CASTING MACHINE. APPLICATION ,FILED NOV, 20. I920.

PatentadJuly 18 1922.

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STRIP CASTING MACHINE. APPLICATION FILED NOV. 20. 1920.

J. S. THOMPSON. STRIP-CASTING MACHINE.

APPLICATION FILED NOV. 20, 1920.

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- J. S. THOMPSON. sum CASTING MACHINE". APPLICATION H'LED NOV. 20, 1920.

Patented July 18, 1922;

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URI/wa @7077/2 \j 77 70m/ O 7 a, QM @M/L JOHN s. zrnemrson, or errrenqo, ILLINOIS.

STRIP-CASTING MACHINE.

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Specification of Letters Patent.

Patented July 18, 31322.

Application filed November 20, 1920. Serial No. 425,363.

To all-10710221716 may concern:

it known that l, JOHN S. THOMPSON, on of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Strip-Casting Ma chines, of which the following is a specification. i i

The invention relates to improvements in machines tor intermittently casting a continnoigis strip or material in fused" integral sect'ons. i

i 1 object of the invention is the provision of a machine for casting alcontinu ous strip oi material in intermittently 'i'orined sections in progressive order, movthe strip, and cutting and trimming the strip into definite lengths during the intermission between the strip moving operations.

Another object is to provide a-maohine in which molten metal is injected into a molding =-hamber.; the chamber is then recipiocated with the strip and returned bout it to advance the sectionof the strip cast during the previous operation, in which the movementol molten and cast metal is always in the same direction, and in which a space is provided in the molding hamber tor introduction of molten metal inthe rear of the preceding cast section, for casting a succceding section.

Another object isthe provision of a machine having a melting pot with a nozzle comn nnicating therewith and a choker valve adapted to open and close the valve port through said nozzle; a pump for forcing the metal from the pot through the nozzle, .in timed intervals, into a reciprocatory molding chamber normally open at both ends, one end ot which is closed by the nozzle, theaXis of which is in alignment therewith, the

opposite end being closed by a previously cast sectionoi the strip, and means for foribly injecting molten metal into the moldchamber and. causing it to fuse to the iviously cast section and thereatter'movthe molding chamber and the cast inateiial in ,a direction away from the pot; holding' the cast strip to prevent its return movement; returning the molding-block to its ori -inal position and repeating the cycle of op tionl Another important object of this invenmaterial by a separate mechanism to reduce it to exact lengths;

This ditliculty is obviated in the present mechanism by the' pro-vision of a trimming element operated in unison with the cutting device to simultaneously reduce the material to exact lengths.

Other, further and more specific objects of the invention will become readily apparent, to persons versed in the art, from a mnsideration of the following description when taken in conjunction with the accompanying drawings forming a part hereof, wherein l c Fig. 1 is a side elevation of the machine .showing; some parts in section.

Fig. 2 is a transverse section taken on line 2-2 of Fig. 1.

Fig. 3 is a section taken on line 33 of Fig.9.

Fig. 4 is an enlarged plan view of an adjustable means for determining the length m the strip or rule to be cut and trimmed from a continuous strip.

7 Fin. 4L is a fragmentary view of the controlling lever inanother position.

Fig. 5 is a section through an elevation of a part of themachine taken on line 5-5 of Fig. 4.

Fig. S -is a"tragment of the stationary rut-ting knife.

6 is a section detail, taken on line 6-6 of Fig. 5.

Fig. 6 is a broken away portion of a ver tically reciprocating rod, shown in 5 and Fig. 6, and a plan view in Fig. 4. i Fig. 7 is an isometric perspective view of the block enclosingthe molding chamber in which the strip is cast.

Fig. 8 is a plan view of the same.

Fig. 9 is a side elevation thereof.

Fig. 10 is a detachable block or part for l'iolding the matrices shown in Fig. 12, to be secured to the part 7 by screws, or the like.

F 11 is the carriage for holding the mold block shown in Figs. 7 to 10, inclusive, and with which it is reciprocative.

Fig. 12 shows three pieces of a matrix the edges of which form a boundary wall of the chamber in which the strip is cast.

Fig. 13 is a section of the mold block showing the parts assembled in the carriage.

.Fig. 14- is an isometric perspective view oi one-half of the guide box or housing in whichthe mold block is reciprocative.

Fig. 15 is a section taken on line 1515 of Fig. 1.

rig. 16 is a view taken at right angles to Fig. 15.

Fig. 17 is an enlarged sectional view taken on line 17-17 of Fig. 4-.

18 is a diagrammatic representation of a chart showing the timed relation of the moving parts of the machine.

In all of the views the same reference characters are employed toindicate similar parts;

-The machine is intended, more particularly, tor casting continuous lengths of printers rules, leads and the like, in which the strip is cast in relatively short sections intermittently, it subsequently cast section being fused to the section previously cast. s to form a continuous strip of substantially unlimited length; the section previously cast being moved with the mold block and held while the .mold block is being returned tor the purpose of casting another section. The machine is so arranged that the strip is severed in suitable lengths and trimmed in definite lengths, automatically, while the other operations are progressing.

in the chosen embodiment for disclosing my invention I have shown a side elevation oi the machine in which 20 is the bed O'l f t 1e mac line and 21 and 22 are the legs upon which it is mounted. A rotatable shaft 23 finds bearings 24; and 25 on the respective ends of the machine. The shaft is rotatable by the hand lever 26 or furnished with a suitable source oi power not shown. Mounted on the front end of the bed 20 is a metal mcltin pot 27. The pct 27 is supported by brim 28 and 29, secured to the upper i of the bed, and. under the pot and with in the bed 20. is located a gas burner 30, supplied with fuel by the pipe 31, for heating the pot and melting the metal therein.

in the interior body part 32 of the pot 27 a cylinder 33 in which a plunger 3%: is r ciprocative. T he cylinder communicates th a well or sump 35 to'contain metal to he torced into the molding chamber through which. the-strip to be cast passes. in a manner hereafter to be described.

A vertical rod 86 is attached to the upper end of the plunger 34- and is connected to a horizontal two-ended lever 37, 39 which is pivoted, at 38, and which is connected at ell to a vertical rod lO.

A cam 67 is secured to the shaft 23 and a cam roller L2 is the means by which the plunger 3% is reciprocated, in a vertical path when the shaft 23 is rotated.

A spring 43 is connected to the leg 22, as at 44, and is the means for yieldingl v holding the cam roller 4:2 in contact with the cam 67. The horizontal lever 37 may be connected to the stem 36 through either one of the holes 45 for the purpose of reciprocating the plunger 34. v

A nozzle 46 enters a cup shaped opening in the side wall of the pot 27, and is provided with a rounded terminal end 48 that fits in the cup in the relatively stationary plate 49, the plate being perforated, as at 50, to provide a port for the valve 51. A. reciprocative valve 51 is adapted to close the port or orifice 50, in the nozzle plate 49. The valve 51 is prolonged into a valve stem 52, which finds hearings in the part 53, and which is reciprocative by a bell-crank lever 5a. The stem 52 is provided with spiral "flutes 55, through which the metal can pass between the stem and the part 56 in which the valve stem is reciprocative without disturbing the bearing for the stem.

The bell-crank lever 54 is pivoted to a stationary part 57 and extends rearwardly into a pronged end 58. A horizontal lever 59 is pivoted, as at 60, to the upper edge of the pot 27, and has an end 61 that extends between the prongs 58 ot the lever 5 a. The outer end, 62, is pivotally connected, as at 63, to a vertical rod 6-1l. A roller 65 on the rodG l. projects into a cam-way, as at 66, in the side face of the cam 67 which is secured to the rotaryshatt 28, so that when the shaft 23 is rotated the valve 5i is reciprocatcd by the mechanism described.

The'spring 6S, surrounding the vertical rod 6%, yieldingly holds the valve 51. on its seat in the port provided in the nozzle plate 49, there being sufficient clearance between the roller on the vertical rod ea and the cam in which it is contained so that the valve 51 will always firmly close the opening. or port, in the plate as at times when such port should be closed. 7

at head 70 is secured to the bed 20 by screws 71, or the like. The head 70 is provided with an overhanging ledge 72. under which is located the mold block housing. which consists oitwo members: 7a and Eachro'f these members is .prvided with a vertical wall 76 and spaced apart lateral or horizontal walls 77 above, and 78 below. The edges of the walls are provided with grooves 79, an insertable feather or strip being, used for the purpose of holding the members 74 and in perfect register. The

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members 741 and 75 of the housing are held together by screws 83 that pass through holes 8% in the member 741 and into threaded. holes that register therewith in the box member 75. The member 75 is undercut, as at 85, to receive the guide member 86. that extends laterally of the carriage 87. The carriage 87 is provided with upwardly turned flanges 107-108 between which the molding block 90 is adapted to be mounted. channel 89 is formed in one face 01 the bloelr to form a moldingchamber therein, the wall 88 of the housing member 7 5 forms the opposite side of the molding chamber. when the parts are assembled. as in illip; 2. The width of the laterally extending; ledges 91 and 92. determines the thickness 01"? the strip or rule to be cast. Vfhen rules are to be cast, the forward end of: the mold block 90 is cut away. as at 96. to receive the matrix holding replaceable block 97. This block is shown in. the position it occupies with reference to block 90. in Fig. 13, the matrix being secured to the blork 97 for the purpose of giving one edge of the strip to be cast a de-' sired configuration. In Fig. 12 the matrix is shown to consist of plates 98. 99 and 100 held in place by a screw threaded plate 101. by screws 102 that pass through. the block 97 into the plate 101. The lower edges of the plates 98. 99 and 100 are of such configuration as to give the rule, cast by the machine. parallel printing lines on one of its edges. The screws 102 pass through the holes 103 into the threaded holes 104: of the block 101. and screws 105 pass through holes 106 in the block 97 to hold the latter in place on the block 90. Of course. the shape and configuration of the matrix plates 98 to .100. inclusive. may be changed to suit the character of face the rule cast in the machine is to possess. 1

The reciprocating carriage 87 receives the mold block 90 and is reciprocated in the housing 7475 by means ot a pivot d lever 109. the end 109 of which projects into the opening 110 of the carriage through the opening" 111 provided in the housing 76. The lever 109 is pivoted to a laterally adjustable pivot at 112, adjustable tor the purpose of changing the length o1 the stroke of the upper end 109 the lever 109. The lower end provided with a roller. 11%. having); a late ally projecting bearing: 115 that projects into a race-way 110 of the cam 117. The cam 117 is se i-ured to the shaft and rotates therewith. The race-way or groove 1100 3 the cam 117 is obliquelv positioned as to its axis and therefore it is manifest that when the cam is rotated the lever 109 will be reciprocated to greater or extent and :he effective length of stroke or extent of movement of the upper end of the lever. The greater amount of lost motion the less will be the movement of the upper end of: the lever. The lever 109 has two arms 109 and 1.09 The arms 109 and .109 of the lever 109 are pivoted to a reciprocating bar 118. which is slidably movable in guides 119 and 120. The guide 120 is provided with a rectangular slot 12 to receive an axially adiustable wedge122. The guide 119 provided with a wedge-shape slot 123 to receive the wedge 12 and with a circular perhirat-ion-to receive the end 12 1E oi the wedete as a suide and permit the same to pass trcelv therethrough. The other end of the wed e 122 is screw threaded and passes through the vertical wall of the bed 20. The wedge 122 is axially adjustable by the hand wheel 126. The sliding bar 118 is provided with an c-"enin 127 in which the wedge 122 may on N l 1 its wi t part 122 is in the slot 121. wi 1 the wedge filling the slot 127.

then the bar 118 not axially movable and the upper end 109 of the lever 109 has its maximum movement. lit the wedge. however. is withdrawn. as shown in Fig. 3. to a .ggrer or less extent. then there is more or ess ,ost motion provided to the piwital point 112 by the opening 127 in the sliding bar. and before the lever 109 will move on the pivot, the bar 118 will be moved back bodily until the boundary of the slot therein touches the wedge 122. whereupon the upper end 109. of the lever 109. will then move. which operation will have the efi'ect of reciprocating the mold block 90 and the carriage 87 in the housing 7 1-7 5. The bar 118 is preferably provided with a screw 128., which may be used tor adjusting: the limit. of movement of the bar in one direv ion. while the wedge 122 adjusts the limit of its movement in the other direction. The adjustment oi? the wedge 122 will determine the leno th of the section of the strip or rule toibe cast. at each casting: operation. or more correctly speaking. the length of strip to'be extruded tromt-he molding block subsequent to each castingoperation.

A removable pin 129 holds the pivot pin 112 in place. flhen itis desirable to remove the mold block 90. bodily. from the housing 741-75, it is necessary that the upper end 1 09. of the lever 109. shall be taken from the slots 110 and, 111. This is accomplished by lowerins the lever. To lower the lever the pin 129- is removed. whereupon the pivot pin 112 is taken out and thereto-re the lever will move downwardly. Now it is not desirable that the lever shouldmove down so for as to be entirely displaced and therefore a pin 130 projects from the inner surface or the arm 109 and rests upon the top of the reciproeating" bar 118. when the upper end oil the lever is in its lowermost position. This is 161, controlled by a screw and lever 162, and into an opening 163m the head 1417. The clamping dog 1 57 is provided with a reduced screw threaded end 164; and is adjustable toward and from the confronting face of the rule or strip 95 by means of a nut 165. It is held in adjusted position by the clamp 161. hen tne lever is rotated, it turns the screw connwted to the clamp and draws the clamping members firmly into contact with the sha k 160.

Now, it will be manifest that when the rod 1 1 1 is drawn downwardly, that the spring 1.5 1; will force the vertically reciprocatory rod 158 dmvnwardly carrying the lever 152 with it and causing the edge 151 of the clamp member 1-19 to engage the con fronting side surface of the rule 95 and hold it, in co-operation with the end 158 of the dog 157, and prevent its retraction.

The clamping operation of the device just described, for holding the rule 95 in the position in which it is placed by reciproeru tion of the mold ing block 90, is such that the clamp members 1 19 and 158 release the strip or rule prior to the outward movement of the mold block 90 and grip it before its retraction.

When it is desired to remove the mold blork 90, it must be taken from the rear end of the housing or molding box 74:. To accomplish this, the (lamp 161 is opened by ro tation of the lever 162, thereupon the dog 157 may be removed, whereupon the molding block may then be moved out of the rear end of the-molding box 741.

The strip. or rule that is cast in sections, in the manner heretofore described. is to subsequently be cut into given lengths and definitely trimmed at substantially the same time that the given length is severed from the strip. The lengths thus severed may be several times longer than the sections that are cast at each reciprocation of the molding block, and therefore a means must be provided which will operate, or set into operation, the severing and trimming means after a definite given number of reciprocations of the molding block have been made or afte a definite series of sections of strips have been cast.

The head 7 O is provided with two sockets 166 and'167 to receive two parallel smooth drawn tubes 168 and 169. These tubes are slidable in the sockets but they are held by a clamping arrangement effected by a slot 170 extending between the sockets and an eccentric clamping member 171 operated by the handle 172. Vl hen the handle is outturned, the slot 170 is made narrower thus reducing the diameter of the sockets 166 and 167 and clamping the tubes therein.

The tubes 168 and 169 with the shaft 17 3 extend rearwardly over the bed 20 of the machine. The shaft 173 is supported in one end of an arm 174 that extends from the head 70. One end of the arm 17% is downturned to support a shearing knife use member for shearing the strip This knife is stationary and cooperates with a blade 177 carried. upon the oscillating arm An oscillating block 179 has an integral hub 180 that is supported in the bearing 17%. The hub 180 is a part of the block 179, and the shaft'178 rotatably fixed in the hub, but is movable axially therein; and the hub and block are the means for oscillating the shaft. A keyway and key or spline and feather 181 goes the full length of the shaft 173 and a set screw, together with the feather 181, secures the cutting arm 178 to the shaft 173. i

A ratchet wheel 182, mounted on the frame 72, is rotatable upon its vertical axis 183. 'A spring 184 is located beneath the ratchet wheel, between the rim and the hub, and tends to normally bias the ratchet wheel in one direction so that the latter will automatically be returned to its normal position by the spring, when released. A pin 217' is located in the ratchet wheel 182', on. the under surface thereof, in such position as to cause it to strike another pin or stop 218 located in the frame 72 when the spring 184 rest-ores the ratchet to normal position. One side of the rim 185 of the ratchet wheel is undercut, as at 186, to provide a means for securing an adjustable block 187 at selected position on the circumference of the wheel. A tapered wedge 188 fits the tapered undercut and is secured to the block 187 by a screw 189. The block is secured to the rim of the wheel at a selected position thereon for a purpose to be hereinafter more fully explained by means of a key 2141- mounted in the block 187 and held in engagement with the teeth of the ratchet by means of a spring 215 acting downiwirdly. A knob 216 provides the means for lifting' the key 214 out of engagement with the ratchet teeth to permit the entire block to be shifted to any desired position around the circumference of the ratchet.

Pi'voted in a horizontal slot of the block 179, as at 190, is a lever 191. In the lever is a spring pressed holding dog, or pawl 192, which serves the purpose of preventing the wheels 182 from being rotated anticlockwise by the spring when the pawl is in contact therewith.

A. bell-crank lever 193 is pivoted to the. bl0ck 179, at 194. On the end 195 of the cated between the stationary arm 17 5 andthe oscillating arm 178.

It has heretofore been stated that the vertical rod 138 makes one reciprocation to each, revolution of the shaft The upper end of the rod 138 is tapered, as at 203, and each time that the rod 138 is raised the tapered part 203 comes in contact with the end 201 of the bolt 200 and oscillates'the bell-crank arm 193 on the pivot 194. The spring 205 normally holds the end 201 in contact with the surface of the Vertically reciprocating rod 138, so that when the tapered portion 203, of the vertically reciprocating rod 138, strikes the end. of the bolt 201 on its upward and downward movement, it oscillates the bell-crank arm 193 on the axis 194, which causes the ratchet pawl 196 to move the wheel 182 the distance of one tooth, and the holding pawl 192 holds the wheel 182 against the effect of the spring which tends to rotate it in the opposite dimotion.

The lever 191 is yieldingly held in the position shown in Fig. 4 by means of a flat spring 206, which bears against the boundary of the slot 207 in the block 179. After definite number of reciprocations of the vertically moving rod 138 have been made, the ratchet wheel 182 will have been moved a given number of notches, by the means heretofore described. For each section. of strip cast in the machine the ratchetwheel 182 is moved one notch.

To determine the time of movement of the arm 178 to shear the strip 95 the blOCK 187 is placed at a selected point upon the rim of the wheel 182. After the wheel 182 has been rotated, in the manner described, a sufficient distance the block 187 strikes the lever 191 and moves it into the position shown in Fig. 4, against the resistance of the yielding spring 206. The lever 191 will not be moved beyond this position, however, because the extended end 191 will be stopped in its movement by the reciprocating rod 188. The rod, however, has placed in its confronting surface a round block 207 having a slot 208, into which the lever 191 will be moved, as shown in Fig. 6; \Vhen the block 187 moves the lever 191 into position shown in Fig. 4. the xtended end 191 will enter the slot 208 in the block 207 and further reciprocation of the rod 138 up and down will move the lever 191 and the block .179 on its axis 180, thereby oscillating the shaft 173 and causing the knife arm 178 to sever the strip 95, that is at the time lohen the arm 191 has been moved into the position shown in Fig. 4. in the manner heretofore described, the extended end 198 of the pawl 196 will strike the confront mg surface of the lever 191 and raise the front end of the pawl out of the path of the teeth of the wheel 182 and the holding pawl 192 will be withdrawn from its contact with the teeth of the wheel 182, and therefore the spring 184 will rotate the wheel 182 and return it to its normal position, pin 217 in contact with pin 218. From this it will be apparent that the location of the block 187 on the periphery of the wheel. 182 will determine the lengths into which the strip or rule 95 is to be cut. When the block 187 is withdrawn from the path of movement of the arm 191, the spring 206 of the arm will return it to its normal position.

Nhen the block 187 is brought into emit-act with the lever 191 it is apparent that the ratchet 182 cannot be further rotated by the pawl 196, and the next upward. stroke of the bar 138 will cause the bolt 200 to be forced backward against the compression of the spring 202, until the further upward movement of the bar 138 brings the slot 208 into line with the lever 191, allowing the lever to be forced into the slot by the pressure exerted by the block 187 against its opposite end.

The knife arm 178 is divided, into two parts; the arm 210 which carries the knife 177 and the arm 211 which is separated therefrom by the slot 212 and which serves as a means for catching the rule or strip when it is sheared by the knives 176 and 177. A belt 213 passes through both of these arms and draws them together for the purpose of tightening them on the hub 180.

Mounted on the outer ends of the tubes 168169 is the bracket 174, provided with a downturned arm 175 carrying a knife 176 and the oscillating arm 178 carries a knife 177, and in every respect; it is the same sort of arm as that mounted on the inner ends of the tubes 168-169. The bracket 174* and the knife arm 1'78" may be moved axially of the tubes 168 and 169 and of the shaft 173 so as to be located at the proper distance from the knife 177 of the arm 178. The cutter 177 on the oscillating arm 178 and the cutter 176 on the downturned arm175 on the outer end of the structure are the means for trimming to exact dimensions the section that is severed from the cast strip by the knives 177 and 176. The arms 178 and 178 are moved coincidentally by the oscillation of the shaft 173.

A series of fingers 215 are slidable upon the shaft 173 and each finger is secured in selected position by a screw 216. The object of the fingers is to assist in bodily and laterally moving the sections or lengths severed from the cast strip. As the sections, or lengths from the strip 95, are cut, they are moved laterally and piled against the bracket 218, which is adjustably secured on a platform 219, each of the fingers 215 contributing towards the parallel movement of the strip.

b" A sight feed oil cup 220 is used to contain a lubrieantthatmay be fed into the molding chan'iber to lubricate the path oi i'novement of t 1e molding block and the carriage upon which it is mounted. and further lubricate the interior of the molding chamber to prevent adhes on of the molten metal thereto. The lubri it is t ed through a conduit 2:21 into the cue oi the housing and flows down the face of he nozzle plate.

A. collar 2:22 is lined to the end oi the tube 168 to limit the outward movement thereof. Vihen it is desired. to remove the mold block of the machine, the lever 219, controlling the eccentric 220 (Fig. 2), is moved to unclamp the tubes led and i169, whereupon the tubes are moved outwardly the distance controlled by the collar 222, which distance permits the lower tube 169 to be entirely withdrawn from the bearing 16? and permits the entire structure to be swung pivotally in the hearing 166, carrying with it the cutter arms li5l.78175178. shaft 173 and actuating block 179.

Novel features not claimed in this application are reserved and will be made the subject oi another application to be filed later.

The employment of a melting pot having a nozzle and choker valve to admit and shut off the flow of metal at intervals, permits the contents of the mold chamber to cool.

and shrink before it is advanced to make way for successive increments, thus avoiding the frictional resistance which is otherwise the cause of breakage of the strip and other trouble.

This method also permits the introduction oi a lubricaiit into the mold after the strip has been advanced and before the next succeeding cast to further assist its removal and prevent adhesion.

By arrangii'ig the molding chamber in axial alignment with the metal pot nozzle, the molten metal is introduced into the molding chamber with the least possible interference to its liow, thus causing the incoming fluid metal to impinge upon the solidified edge ol' the previously formed casting with great force, causing them to fuse together and form an integral unit of considerable strength.

By introducing the molten metal into the molding chamber in a dire tion which will permit the incoming metal to strike the entire edge oi? the previously formed and solid itied casting simultaneously and in the direction of its length, the fluid metal is caused to fuse deeply into the previously formed casting. making a homogeneous strip with no weakness at the joints.

By causing the incoming fluid metal to impinge upon the previously formed casting with great force and simultaneously strike the entire edge of same, in the direction of its length, high temperatures of the n art to which this appertains, such asthc rast r metal and casting bot; are avoided. This important advantage will be further up lneciated wneiu using metals for casting printers leads, slugs and rules, which usually carr a considerable per. outage of tin. hava low fusing point. and which ingredient is readily damaged by h' Other uses to which my .pparatus ma,

applied will be evident to those skilled in t ing o tubular or round shaped bars as as rectangular shapes, and wherever 1n the specification and claims strips or bars are 2. In a device for cutting strips of material into sections of definite length, the combination, of means for intermittently advancing the strip to be severed; a cutting and trimming mechanism; an intermittently moving means for operating said mechanism normally disconnected from said mechanism; a ratchet operated by said intermittently moving means, and means operated at a predetermined time by said ratchet to connect said intermittently moving means to said cutting mechanism.

3. In device for cutting strips of material into sections of definite length, the combination of means for intermittently advancing the strip to be severed; a cutting and trimming' mechanism, operable during a dwell between movements of said strip; an. intermittently moving means for operating said mechanism normally disconnected from said mechanism; a ratchet operated by said intermittently moving means and means operated at a. predetermined time by said ratchet to connect said intermittently moving means to said mechanism. and means for adjusting said connecting means to vary the time o'l its o eration.

4. in a device for severing strips of material into sections of predetermined length, means for severing the strip into sections; means tor trimming the opposite end of each section while the strip is being severed. and means for adjusting the distance of separation between the severing and the trimming means. V

5. In a device for severing strips of mate rial into sections of definite length, cutting members adjustable with respect to each other adapted to operate on both ends of said sections simultaneously and means for severing the sections from the strip and simultaneously trimming the opposite end of said section.

6. In a device for cutting strips of mate rial into sections of predetermined length, means for advancing the material to be severed means independent of the strip for operating the severing means at predetermined intervals, and means adjustable with respect to the severing means for coincidentally trimming the strip to exact linear diniensions.

7. In a device for cutting intermittently moving strips of material molded into sections of definite length, comprising a plurality'of pairs of spaced-apart relatively adjustable cutters adapted to be operated by a. common member to simultaneously sever and trim the sections and operable in timed relation with the movement of the strips.

In testimony whereof I hereunto subscribe my name.

JOHN S. THOMPSON. 

